[feat] add lib/atom to act as atomic and for global counter

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.64% (target: -1.00%)	:white_check_mark: 99.34%

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (77a101ade5621e95ad88baa153e59d0a181041db) | 4018 | 3626 | 90.24% | | | Head commit (21dc880535034c76efad8ae9b9cbdc4bc7211dcf) | 4321 (+303) | 3927 (+301) | 90.88% (**+0.64%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#77) | 304 | 302 | **99.34%** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 99.27798% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 88.11%. Comparing base (77a101a) to head (21dc880).

Files	Patch %	Lines
lib/atom/helper.go	96.66%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #77 +/- ## ========================================== + Coverage 87.32% 88.11% +0.78% ========================================== Files 34 37 +3 Lines 3921 4197 +276 ========================================== + Hits 3424 3698 +274 - Misses 385 387 +2 Partials 112 112 ```

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